I have an Apple IIplus with a problem. When I boot it there's no beep. The screen is filled with 77@@ (see pictures). Does anyone know what's wrong with it, I think a chip may have gone bad but I don't know which one. See my Flickr for the photos: http://www.flickr.com/photos/24500646@N02/. I really hope someone can help me!
Apple II plus